文献类型：期刊文献

中文题名：NaYF_4:Yb,Er材料的制备及其上转换发光性能

英文题名：Preparation and Luminescence properties of NaYF_4:Yb,Er

作者：李丽平[1];高玮[2];陈雪梅[1];赵月昌[2];吴秋芳[1];马新胜[1]

机构：[1]华东理工大学化工学院国家超细粉工程研究中心,上海200237;[2]上海华明高纳稀土新材料有限公司,上海201613

年份：2012

卷号：33

期号：2

起止页码：35

中文期刊名：稀土

外文期刊名：Chinese Rare Earths

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：上转换发光;沉淀法;NaYF4:Yb,Er

外文关键词：up-conversion luminescence; precipitation method; NaYF4：Yb; Er

摘要：通过沉淀法制备Yb3+和Er3+共掺的NaYF4上转换发光材料,考察了主要制备工艺条件对材料上转换发光性能的影响,并探讨了其上转换发光的机理。利用x射线衍射(XRD)、透射电镜(TEM)、荧光光谱仪对样品进行了表征。结果表明,Yb3+和Er3+的掺杂浓度分别15%(摩尔分数,下同)、3%,焙烧温度为600℃时可得到发光性能较好的六方相NaYF4:Yb,Er上转换材料,其主要上转换途径是Yb3+和Er3+之间的能量转移,且Er3+的红、绿光发射均为双光子过程。
In this paper,ytterbium（Yb^3＋） and erbium（Er^3＋） ions codoped NaYF4 were synthesized by precipitation method,the effect of the main preparation conditions on the upconversion luminescence was investigated,and the upconversion mechanism was analyzed.The samples were characterized by X-ray diffraction（XRD）,transmission electron microscopy（TEM） and fluorescence spectroscopy.The results show that hexagonal NaYF4： Yb,Er up-conversion materials with excellent luminescence can be obtained when the concentrations of Yb^3＋ and Er^3＋ were 15% mol,3% mol respectively,roasted at 600℃,the main up-conversion approach is the energy transfer between Yb^3＋ and Er^3＋,and the red,green emissions of Er^3＋ are two-photon process.